I can't fully receive the package

[MrCat123-png]

I'm making a ReplayMod for the bot on mineflayer, to be precise, only saving the replay and I shot 3 identical replays through the mod and in these 3 replays I received the same packages, but when I used the bot, some packages were missing, let's say a package with a value 25 00 00 and others.

bot._client.on("raw", (buffer, meta) => {
  if (buffer == '<Buffer 03 ff 01>') { return }
  const currentTime = Date.now();
  const timeDiff = currentTime - lastPacketTime;

  const length = buffer.length;

  const headerLength = 8 + buffer.length; // header size + data size
  const headerBuffer = Buffer.alloc(headerLength);

  // Write the time in the next 4 bytes in Big-Endian order
  headerBuffer.writeInt32BE(timeDiff, 0);
  // Write the length into the first 4 bytes in Big-Endian order
  headerBuffer.writeInt32BE(length, 4);
  // Copy the original buffer after the header
  buffer.copy(headerBuffer, 8);

  lastPacketTime = currentTime;
  console.log(buffer);

  writeStream.write(headerBuffer);
});